Common mode filter project by means of internal impedance measurements

Author

Florean, Daniele ; Spiazzi, Giorgio

Author_Institution

Dept. of Electron. & Inf., Padova Univ., Italy

Volume

2

fYear

2000

fDate

2000

Firstpage

541

Abstract

The EMI filter used in switching apparatus are usually designed on the basis of the designer personal experience and by a trial and error approach. This is especially true for the common mode part of the input filter for which a systematic procedure that, by means of proper calculations and measurements, gives an idea of the filter component values is missing. This work presents a rigorous method to estimate the filter component values needed to achieve the desired attenuation for the common mode noise generated by the switching apparatus. This method is based on the indirect measurement of the common mode impedance of the equivalent noise generator

Keywords

electric impedance measurement; electromagnetic compatibility; electromagnetic interference; interference suppression; loss measurement; network synthesis; noise; noise generators; passive filters; EMC; EMI filter; common mode filter project; common mode impedance; common mode noise attenuation; equivalent noise generator; filter component values; indirect measurement; input filter; internal impedance measurements; passive elements; switching apparatus; systematic procedure; Attenuation measurement; Circuit noise; Electromagnetic compatibility; Filters; Frequency measurement; Impedance measurement; Informatics; Loss measurement; Noise generators; Noise measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2000. IEEE International Symposium on

Conference_Location

Washington, DC

Print_ISBN

0-7803-5677-2

Type

conf

DOI

10.1109/ISEMC.2000.874678

Filename

874678